KR20190093011A
|
|
The block-chain system with enhanced security and the method of generating a data block using a double block-chain structure
|
KR20190093012A
|
|
The method for block generation and validation in block-chain system
|
KR20190093013A
|
|
A block-chain system including a multi-block chain structure and a method for forming a block-chain in the block-chain system
|
KR20140102579A
|
|
Control pad
|
EP2547077A1
|
|
Portable terminal for inputting three signals via one input key, and text input method using same
|
KR20100094799A
|
|
A method and an apparatus for inputting korean
|
KR100909546B1
|
|
A pointing device
|
WO2007055545A1
|
|
Method for inputting letters
|
KR20070050835A
|
|
Method for inputting letters
|
KR20010081134A
|
|
racing game of creation and action at internet
|